Year 7 science
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Slide 1 - Year 7 science: separating challenge
- Vianca Jewaskiewitz
Slide 2 - PURE or NOT?
- Separation Challenge
Slide 3 - Title:Separating Substances from another.
- To separate all of the substances with different methods. Try to separate all of them from another.
- Bunsen Burner, Sieve, filter paper, watch glass, tripod, stirring rod, matches, spoon, large Bunsen burner, magnet, tripod, funnel, Salt, Rice, Sand, Foam, Iron Filings.
Slide 4 - Methods:
- Get the magnet and run it through the mixture and collect all of the iron filings.
- You put the mixture through the sieve so that the mixture stays behind and the others go through.
- Put it through the filter funnel so the sand can stay behind to separate the mixtures. And the beaker will catch all the water.
- You put the Bunsen burner under the tripod and then the watch glass so then the rice will evaporation and thee water will evaporate and the rice will stay there.
- To mix it all and add water because that’s the best solvent.
- You leave the larger substance behind like a solid.
Slide 5 - Results:
- Separated the foam with the 1st sieve and rice with the 2nd sieve from the salt and the 3th for the sand and the sand for with the 4th.
- We put sand the sand and salt and water through the filter funnel and the sand was left behind.
- We dragged the magnet through the mixture first and the iron filings were collected away from the mixture.
Slide 6 - Risk Assessment:
- Preventative Measures
- Bunsen burner
- Be careful when turning on not to burn yourself. Be extremely careful when it’s on working mood. Use correct method on turning it on.
- Be careful while using it. And handle with care and two hands.
- Stirring rod
- Be careful it might
- Be careful while using it and try to avoid breaking it.
- Risk Assessment:
Slide 7 - Discussion:
- In this experiment: (discuss the observations and inferences)
- We poured all of our substances in a watch glass and dragged a magnet across the mixture and all the iron filings got stuck to the magnet. Then we put all rest of the substances down the sieve and the foam stayed behind first then the rice then the salt and the sand then we put the sand and salt and then added water to it then put it through the filter funnel and the salt dissolved in the water and then sand stayed behind in the filter funnel. Then we turned the Bunsen burner on the added normal tap water into a beaker then we added our salt and water to the top of the watch glass whole it is heating so that the water evaporates and the salt stays behind. The water in the beaker is bubbling really fast and the water on the watch glass is dissolving. All of the water is dissolved and it all white salt covered around it. We got stuck with what to do with what to filter but in the end we used our past knowledge and we persevered.
Slide 8 - Variables:
- experiment included: (discuss the controlled and experimental variables)
- We had 5 substances today iron filings, sand, salt, foam and rice and if we had to use cooper sulphate it would have changed our experiment. We were Persisting throughout the whole experiment and when something didn’t make sense we just solved it and worked together. We were taking responsible risks by putting the sensible amount of water in it. We could have put in something else like grass to separate but we didn’t.
Slide 9 - Conclusion:
- In the end result our experiment turned out very well and everything worked out. We were able to separate all of our substances so that every is laying by its self as a substances not mixed with anything else. We achieved our aim by following our methods and working together and talking it out and deciding who was doing each method. We were able to separate and archive our aim.
Slide 10 - Pictures:
Slide 11 - Materials:
- Salt, Rice, Sand, Foam, Iron Filings.